US9328475B2 - Steel pipe pile and steel pipe pile implementation method - Google Patents

Steel pipe pile and steel pipe pile implementation method Download PDF

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Publication number
US9328475B2
US9328475B2 US13/994,929 US201213994929A US9328475B2 US 9328475 B2 US9328475 B2 US 9328475B2 US 201213994929 A US201213994929 A US 201213994929A US 9328475 B2 US9328475 B2 US 9328475B2
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United States
Prior art keywords
steel pipe
pipe pile
pile body
wing
open end
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US13/994,929
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US20130272801A1 (en
Inventor
Masamichi Sawaishi
Masatoshi Wada
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Nippon Steel Metal Products Co Ltd
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Nippon Steel and Sumikin Engineering Co Ltd
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Assigned to NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD. reassignment NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAWAISHI, MASAMICHI, WADA, MASATOSHI
Publication of US20130272801A1 publication Critical patent/US20130272801A1/en
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Publication of US9328475B2 publication Critical patent/US9328475B2/en
Assigned to NIPPON STEEL & SUMIKIN METAL PRODUCTS CO., LTD. reassignment NIPPON STEEL & SUMIKIN METAL PRODUCTS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: NIPPON STEEL & SUMIKIN ENGINEERING CO., LTD.
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    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
    • E02D5/22—Piles
    • E02D5/56—Screw piles
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
    • E02D7/22—Placing by screwing down

Definitions

  • the present invention relates to a steel pipe pile and an installation method of a steel pipe pile. More specifically, the invention relates to a steel pipe pile including an elongated cylindrical steel pipe pile body and a helical wing fixed on an outer circumference of the steel pipe pile body at least in a predetermined height range from an end of the steel pipe pile body, and an installation method of a steel pipe pile that is penetrated into the ground by rotational drive.
  • Patent Literature 1 a steel pipe pile including a helical projection on an outer circumference of a steel pipe and being driven into the ground by rotary penetration has been proposed (see, for instance, Patent Literature 1).
  • An end of the steel pipe of the steel pipe pile is obliquely cut at a slant angle of 10 to 50 degrees. With the cut region being provided, a pushing-in performance into the ground can be enhanced and a penetration resistance can be restrained, thereby improving an installation efficiency of the steel pipe pile.
  • the protrusion amount of the helical projection of the conventional steel pipe pile disclosed in Patent Literature 1 is small. Accordingly, since the projection provides not so high entering performance into the ground, even when the end cut region is provided, there is a certain limit in improvement in the installation efficiency.
  • another example of a known steel pipe pile includes a helical wing fixed on an outer circumference of a steel pipe. With the use of such a steel pipe pile, since the wing bites into the ground for entering, the penetration performance can be enhanced, and a further improvement in the installation efficiency can be expected. However, since the wing receives a resistance from the ground, the steel pipe pile rotates around the wing (i.e. become off-centered), so that it is difficult to ensure a linearity especially in an initial stage of the penetration.
  • An object of the invention is to provide a steel pipe pile and an installation method of a steel pipe pile capable of enhancing penetration performance while ensuring linearity during penetration, thereby improving an installation efficiency.
  • a steel pipe pile includes: an elongated cylindrical steel pipe pile body with an open end; and a helical wing fixed on an outer circumference of the steel pipe pile body at a predetermined height range from the end of the steel pipe pile body, the steel pipe pile being rotationally driven to be penetrated into a ground, in which the end of the steel pipe pile body is provided with a slanted opening defined by upwardly obliquely cutting the steel pipe pile body toward a first side in a radial direction of a distal end, and a distal backside defined by a remaining circumference of the steel pipe pile body on a second side in the radial direction relative to the slanted opening, the wing is provided with a wing edge extending outward in a manner intersecting the outer circumference of the distal end of the steel pipe pile body and a wing body continuous with the wing edge and extending in one circumferential direction and toward an upper side, and the distal backside is provided at an area near the second side substantially
  • the distal backside is provided at an area substantially orthogonal to the direction of the wing edge and near the wing body relative to the wing edge.
  • the distal backside is located at a rear side in the rotational direction relative to the wing edge that initially bites into the ground when the wing enters the ground. Accordingly, when the steel pipe pile is rotationally driven into the ground, a resistance force can be applied at the distal backside against a rotation moment for biasing the entirety of the steel pipe pile to rotate around the wing edge receiving the resistance from the ground, so that the steel pipe pile can be penetrated into the ground while avoiding an off-centered movement of the steel pipe pile and ensuring linearity.
  • the slanted opening is provided radially opposite to the distal backside, i.e. at the front side of the wing edge in the entering direction, the soil excavated in accordance with the rotational drive into the ground can be smoothly introduced into the steel pipe pile body through the slanted opening.
  • the soil introduced into the steel pipe pile body can be pushed upward, thereby reducing an increase in the penetration resistance caused by clogging within the pipe.
  • an end of the slanted opening is located at an area past a center of the distal end of the steel pipe pile body.
  • an upper end of the slanted opening is located in an area of the steel pipe pile body at a distance from one to three times as long as a diameter of the steel pipe pile body from the distal end of the steel pipe pile body.
  • a length from a lower surface of the wing edge to the distal end of the distal backside is defined to be equal to or larger than a half of a width of the wing.
  • the penetrability into the ground can be further enhanced and linearity can be improved.
  • an installation method for installing the steel pipe pile of the above aspect of the invention, the method including: sticking the distal backside of the steel pipe pile into the ground to position the steel pipe pile; and rotating the steel pipe pile body to penetrate the ground with the wing entering into the ground.
  • the steel pipe pile body is rotated to be entered with the wing.
  • the steel pipe pile can be installed at a predetermined point without causing misalignment of the center of the pile after being positioned.
  • the penetration performance can be enhanced with the progressive drive of the wing, so that the installation efficiency can be improved.
  • the penetration performance can be enhanced by entering the ground with the helical wing and acutely forming the end of the steel pipe pile body. Further, the penetration resistance can be restrained by introducing the excavated soil through the slanted opening. In addition, the resistance applied on the wing from the ground can be restrained from causing a rotation (off-centered movement) of the entirety of the steel pipe pile with the resistance force caused by the distal backside, so that the installation efficiency can be improved while ensuring linearity.
  • FIG. 1 is a side elevational view showing an end of a steel pipe pile according to an exemplary embodiment of the invention.
  • FIG. 2 is a side elevational view showing a steel pipe pile according to the exemplary embodiment with an end shape different from that in FIG. 1 .
  • FIG. 3 is a perspective view showing the steel pipe pile.
  • FIG. 4 is an illustration showing an effect of the steel pipe pile.
  • FIG. 5 is another illustration showing an effect of the steel pipe pile.
  • a steel pipe pile 1 includes a cylindrical steel pipe pile body 2 elongated along an axial direction X and having an open end, and a helical wing 3 fixed on an outer circumference 2 A of the steel pipe pile body 2 at a predetermined height range from the end of the steel pipe pile body 2 .
  • the steel pipe pile 1 gains a propelling force by the wing 3 to be penetrated into the ground being driven downward while being rotated by a rotary pile driver holding a pile head (upper part in the axial direction X).
  • the end of the steel pipe pile body 2 is provided with a slanted opening 4 defined by upwardly obliquely cutting the steel pipe pile body 2 toward a first side (left side in FIG.
  • the wing 3 includes a wing edge 3 A extending outward intersecting the outer circumference 2 A near the end of the steel pipe pile body 2 and a wing body 3 B extending continuously with the wing edge 3 A in one circumferential direction toward an upper side.
  • the wing 3 is provided in a clockwise (right-hand turning) helical shape seen from the end of the steel pipe pile body 2 toward a pile head.
  • an end point of the slanted opening 4 is located at or over (i.e. near the second side) a middle of a diameter D of the steel pipe pile body 2 at the distal end 2 B of the steel pipe pile body 2 (L 1 ⁇ D/ 2 ), and an upper end point of the slanted opening 4 is located above the distal end 2 B at a height equal to or larger than the diameter D (L 2 ⁇ D).
  • a distance L 3 from a lower surface of the wing edge 3 A to an end of the distal backside 5 is defined to be equal to or larger than a half of a width B of the wing 3 (L 3 ⁇ D/ 2 ).
  • each of the distances L 1 and L 2 is not required to be defined as shown in FIG. 1 .
  • the distance L 1 may be defined to be any length within the range from a half of the diameter D to the length of the diameter D (D/ 2 ⁇ L 1 ⁇ D), and the distance L 2 may be defined in a range from one to three times as long as the diameter D (D ⁇ L 2 ⁇ 3 D).
  • the steel pipe pile 1 may be shaped as shown in FIG. 2 . In the steel pipe pile 1 shown in FIG.
  • the slanted opening 4 is located near a front side (first side) in the entering direction of the wing edge 3 A.
  • the distal backside 5 is located opposite to (i.e. near the second side (rear side in the entering direction)) the slanted opening 4 across the center (the position of the X-axis) of the steel pipe pile body 2 .
  • the distal backside 5 is provided to include a point P 1 defined at an intersection of a line A 2 (a line orthogonal to a line A 1 (a line connecting a base end O 1 of the wing edge 3 A and the center of the steel pipe pile body 2 ) and extending through the center of the steel pipe pile body 2 toward the wing body 3 B) and the steel pipe pile body 2 . Further, as shown in FIG.
  • the distal backside 5 is provided to include a point P 2 defined at an intersection of a line A 4 (a line orthogonal to a line A 3 (a line connecting an outer end O 2 of the wing edge 3 A and the center of the steel pipe pile body 2 ) and extending through the center of the steel pipe pile body 2 toward the wing body 3 B) and the steel pipe pile body 2 .
  • the distal backside 5 is located near the wing body 3 B (at a rear side in the entering direction) in a manner intersecting a line orthogonal to a line connecting any point on the wing edge 3 A and the center of the steel pipe pile body 2 .
  • the resistance force caused by the distal backside 5 located on the line A 4 at a front side in the rotational direction can keep the entirety of the steel pipe pile 1 from causing the off-centered movement.
  • the distal backside 5 is formed to include the points P 1 and P 2 , the resistance against the rotational movement can be applied, thereby efficiently preventing the off-centered movement of the entirety of the steel pipe pile 1 .
  • the steel pipe pile 1 When installing the steel pipe pile 1 , the steel pipe pile 1 is initially driven downward by hitting a pile head with a hammer or using a pile driver and the like to stick an end of the distal backside 5 into the ground so that the steel pipe pile 1 is positioned in the ground. Then, the rotation of the steel pipe pile 1 is initiated. Subsequently, the wing 3 is entered into the ground and is pressed in downward in accordance with the drive distance, whereby the steel pipe pile 1 is penetrated into the ground.
  • the excavated soil can be easily introduced into the steel pipe pile body 2 through the slanted opening 4 and the introduced soil can be pushed upward in the steel pipe pile body 2 for avoiding clogging within the pipe.
  • the slanted opening 4 is opened up to the point higher than the distal end 2 B of the steel pipe pile body 2 by the distance L 2 , the volume of the soil introducible through the slanted opening 4 (introducible soil amount) can be made larger than the volume of the soil determined based on the sunken amount of the steel pipe pile 1 and an internal cross sectional area of the steel pipe pile body 2 (required introduced soil amount).
  • the soil loosened by the excavation with the wing 3 can be introduced into the steel pipe pile body 2 and can be pushed toward an upper side in the steel pipe pile body 2 without compaction, so that clogging in the pipe can be avoided and increase in press-in resistance can be restrained.
  • the distal backside 5 is provided on the rear side of the wing edge 3 A in the entering direction, when the steel pipe pile 1 is rotationally driven into the ground, the distal backside 5 resists against (i.e. offsets) the rotation moment around the wing edge 3 A.
  • the steel pipe pile 1 can be penetrated into the ground.
  • the slanted opening 4 is provided at the front side of the wing edge 3 A in the entering direction, the soil excavated in accordance with the rotational drive into the ground can be smoothly introduced into the steel pipe pile body 2 through the slanted opening 4 .
  • the soil introduced into the steel pipe pile body 2 can be pushed upward, thereby reducing an increase in the penetration resistance caused by clogging within the pipe. Accordingly, since the increase in the penetration resistance can be restrained while avoiding the off-centered movement of the steel pipe pile 1 , the installation efficiency can be improved.
  • the slanted opening 4 is provided by cutting the steel pipe pile body 2 with a plane slanted relative to the axial direction X of the steel pipe pile 1 in the above exemplary embodiment, the slanted opening 4 is not limited to those provided by linear cutting, but may alternatively be provided by cutting along suitable curve lines or curved surfaces.
  • the helical wing 3 in the above exemplary embodiment is exemplified by a wing continuously provided from an end of the steel pipe pile body 2 to a pile head to define a spiral with a plurality of turns
  • the wing may be provided by only one spiral (i.e. one turn) on the steel pipe pile body 2 or may alternatively be continually provided.
  • the width B of the wing 3 is not specifically limited, the width B is preferably from one third to a half of the diameter D of the steel pipe pile body 2 in terms of entering performance.

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Piles And Underground Anchors (AREA)
  • Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
US13/994,929 2011-08-25 2012-07-09 Steel pipe pile and steel pipe pile implementation method Expired - Fee Related US9328475B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2011-183987 2011-08-25
JP2011183987A JP5868636B2 (ja) 2011-08-25 2011-08-25 鋼管杭および鋼管杭の施工方法
PCT/JP2012/067461 WO2013027503A1 (ja) 2011-08-25 2012-07-09 鋼管杭および鋼管杭の施工方法

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US20130272801A1 US20130272801A1 (en) 2013-10-17
US9328475B2 true US9328475B2 (en) 2016-05-03

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US (1) US9328475B2 (ja)
JP (1) JP5868636B2 (ja)
CN (1) CN103339325B (ja)
TW (1) TWI570301B (ja)
WO (1) WO2013027503A1 (ja)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6018983B2 (ja) * 2013-07-23 2016-11-02 北海バネ株式会社 地中熱ヒートポンプシステム用の地中熱交換器

Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857585A (en) * 1931-04-17 1932-05-10 Sr Frederick W Brooks Ice auger
US2395033A (en) * 1945-05-16 1946-02-19 Eric A Black Anchorage
US4790689A (en) * 1986-07-17 1988-12-13 Bauer Spezialtiefbau Gmbh Method and apparatus for producing a support element in the ground
JPH02194212A (ja) * 1989-01-24 1990-07-31 Mitsuru Honda 鋼管スクリュー杭
JPH0441526U (ja) 1990-07-31 1992-04-08
US5240353A (en) * 1992-11-25 1993-08-31 Ayala Research Corporation Anchor with deoperable screw
JP2002348862A (ja) 2001-05-28 2002-12-04 Hitachi Cable Ltd 回転貫入式鋼管杭
CN1510218A (zh) 1998-03-10 2004-07-07 新日本制铁株式会社 旋转埋设桩及其施工管理方法
CN1536171A (zh) 2003-04-04 2004-10-13 株式会社奥特-塞特 组装式钢管桩
JP2004316238A (ja) 2003-04-16 2004-11-11 Masahisa Higuchi 鋼管杭の先端部材
US7004683B1 (en) * 2004-03-26 2006-02-28 Stan Rupiper Helice pierhead mounting plate and bolt assembly
CN2869128Y (zh) 2005-11-11 2007-02-14 刘汉龙 一种螺旋成孔大直径现浇混凝土薄壁管桩机
JP2007113270A (ja) * 2005-10-20 2007-05-10 Nippon Steel Corp 基礎構造および基礎構造の施工方法
US20070243025A1 (en) * 2006-04-13 2007-10-18 Thomas Ronnkvist Helical anchor with hardened coupling sections
US20090180838A1 (en) * 2006-04-13 2009-07-16 Ronnkvist Thomas M Push pier assembly with hardened coupling sections
WO2010116884A1 (ja) * 2009-04-10 2010-10-14 新日鉄エンジニアリング株式会社 鋼管杭及び鋼管杭の施工方法

Patent Citations (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1857585A (en) * 1931-04-17 1932-05-10 Sr Frederick W Brooks Ice auger
US2395033A (en) * 1945-05-16 1946-02-19 Eric A Black Anchorage
US4790689A (en) * 1986-07-17 1988-12-13 Bauer Spezialtiefbau Gmbh Method and apparatus for producing a support element in the ground
JPH02194212A (ja) * 1989-01-24 1990-07-31 Mitsuru Honda 鋼管スクリュー杭
JPH0441526U (ja) 1990-07-31 1992-04-08
US5240353A (en) * 1992-11-25 1993-08-31 Ayala Research Corporation Anchor with deoperable screw
CN1510218A (zh) 1998-03-10 2004-07-07 新日本制铁株式会社 旋转埋设桩及其施工管理方法
JP2002348862A (ja) 2001-05-28 2002-12-04 Hitachi Cable Ltd 回転貫入式鋼管杭
CN1536171A (zh) 2003-04-04 2004-10-13 株式会社奥特-塞特 组装式钢管桩
JP2004316238A (ja) 2003-04-16 2004-11-11 Masahisa Higuchi 鋼管杭の先端部材
US7004683B1 (en) * 2004-03-26 2006-02-28 Stan Rupiper Helice pierhead mounting plate and bolt assembly
JP2007113270A (ja) * 2005-10-20 2007-05-10 Nippon Steel Corp 基礎構造および基礎構造の施工方法
CN2869128Y (zh) 2005-11-11 2007-02-14 刘汉龙 一种螺旋成孔大直径现浇混凝土薄壁管桩机
US20070243025A1 (en) * 2006-04-13 2007-10-18 Thomas Ronnkvist Helical anchor with hardened coupling sections
US20090180838A1 (en) * 2006-04-13 2009-07-16 Ronnkvist Thomas M Push pier assembly with hardened coupling sections
WO2010116884A1 (ja) * 2009-04-10 2010-10-14 新日鉄エンジニアリング株式会社 鋼管杭及び鋼管杭の施工方法

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
Feb. 15, 2015 Office Action issued in China application No. 201280007259.8.
International Search Report issued in International Patent Application No. PCT/JP2012/067461 mailed Aug. 14, 2012.

Also Published As

Publication number Publication date
JP5868636B2 (ja) 2016-02-24
CN103339325B (zh) 2015-12-23
US20130272801A1 (en) 2013-10-17
TWI570301B (zh) 2017-02-11
WO2013027503A1 (ja) 2013-02-28
TW201311972A (zh) 2013-03-16
CN103339325A (zh) 2013-10-02
JP2013044200A (ja) 2013-03-04

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